EP 2159292 A1 20100303 - PROCESS FOR MANUFACTURING SHAPED ARTICLE
Title (en)
PROCESS FOR MANUFACTURING SHAPED ARTICLE
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES FORMKÖRPERS
Title (fr)
PROCÉDÉ SERVANT À FABRIQUER UN ARTICLE PROFILÉ
Publication
Application
Priority
- JP 2008061006 W 20080616
- JP 2007158445 A 20070615
Abstract (en)
The present invention provides a method for manufacturing formed article, which can inhibit damage and debonding of a coating layer at preforming and which can improve surface quality of the formed article when preforming a base material of a galvannealed steel sheet and then quenching the preform to produce a formed article. A method for manufacturing formed article comprising: a first step comprising: feeding into a first die a galvannealed steel sheet, as a material, which has a coating layer containing: 8-25 mass % of Fe, and a remnant containing Zn, Al, and impurity; and then preforming the galvannealed steel sheet such that material temperature just before preforming of the first step being within the range of 41-700 degree C, to obtain a preform; a second step of heating the preform at a temperature of A 1 transformation point or more; and a third step of quenching the heated preform from the temperature of A 1 transformation point or more to obtain a formed article.
IPC 8 full level
B21D 22/02 (2006.01); B21D 22/20 (2006.01); B21D 22/26 (2006.01); C21D 1/18 (2006.01); C21D 1/673 (2006.01); C21D 9/00 (2006.01); C21D 9/46 (2006.01); C22C 18/00 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/22 (2006.01); C22C 38/28 (2006.01); C22C 38/32 (2006.01); C22C 38/38 (2006.01); C22C 38/58 (2006.01); C23C 2/06 (2006.01); C23C 2/26 (2006.01)
CPC (source: EP KR)
B21D 22/022 (2013.01 - EP); B21D 22/20 (2013.01 - KR); B32B 15/013 (2013.01 - EP); C21D 1/18 (2013.01 - EP KR); C21D 1/673 (2013.01 - EP); C21D 9/00 (2013.01 - EP); C21D 9/46 (2013.01 - EP KR); C22C 18/00 (2013.01 - EP KR); C22C 38/00 (2013.01 - EP); C22C 38/001 (2013.01 - EP); C22C 38/02 (2013.01 - EP); C22C 38/04 (2013.01 - EP); C22C 38/06 (2013.01 - EP); C22C 38/22 (2013.01 - EP); C22C 38/28 (2013.01 - EP); C22C 38/32 (2013.01 - EP); C22C 38/38 (2013.01 - EP); C23C 2/06 (2013.01 - EP); B21D 22/208 (2013.01 - EP)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
EP 2159292 A1 20100303; EP 2159292 A4 20160831; EP 2159292 B1 20180530; CN 101680048 A 20100324; CN 101680048 B 20131225; ES 2678072 T3 20180808; JP 5218404 B2 20130626; JP WO2008153183 A1 20100826; KR 20100019500 A 20100218; PL 2159292 T3 20181130; WO 2008153183 A1 20081218
DOCDB simple family (application)
EP 08777244 A 20080616; CN 200880019439 A 20080616; ES 08777244 T 20080616; JP 2008061006 W 20080616; JP 2009519336 A 20080616; KR 20097025796 A 20080616; PL 08777244 T 20080616